// explicit this
res1: String(List(1).map((it) -> this).single.length == 3) = "abc"
res2: String(List(1).map((it) -> List(2).map((it) -> this)).single.single.length == 3) = "abc"

// implicit property invocation
res3: String(List(1).map((it) -> length).single == 3) = "abc"
res4: String(List(1).map((it) -> List(2).map((it) -> length)).single.single == 3) = "abc"

// implicit function invocation
res5: String(List(1).map((it) -> getClass()).single == String) = "abc"
res6: String(List(1).map((it) -> List(2).map((it) -> getClass())).single.single == String) = "abc"